If a sound justification for most scientific activity is going to be found, it will eventually come perhaps from a recognition that man's sense of curiosity about the world and himself is every bit as compelling as his need for clothing and food.... Making sense of the world and one's place in that world has roots deep within the human psyche.... We can drop the dangerous pretense that science is legitimate only in so far as it contributes to our material well-being or to our store of perennial truths. Viewed in this light, the repudiation of theoretical scientific inquiry is tantamount to a denial of what may be our most characteristically human trait.